Firearm.



T. C. JOHNSONl FIREARM. APPLIGATIGN FILED DBO. 29, 19'09.

Patented May. 24, 1910.

2 SHEETS-SHEET l.

T. C. JOHNSONg FIREARM.

APPLIOATION FILED DEG. 29, 1909.

Patented may 24, 1910.

2 SHEETS-SHEET 2.

@im n M W@ unirnn nsrnrns rnfrnn THOMAS C. JOHNSON, OF NEW HAVEN,CONNECTICUT, ASSIGNOR TO WINCHESTER REPEATING ARMS CO., 0F NEW HAVEN,CONNECTICUT, A. CORPORATION.

FIREARM.

Specification of Letters Patent.

Application lerl December 29, 1909;

Patented May 2a, icio.

Serial No. 535,409.

, and do hereby declare the following, when taken in connection with theaccompanying drawings and the` numerals of reference marked thereon, tobe a full, clear, and eXa-ct description of the same, and which said Idrawings: constitute part of this specification, and represent, in

Figure 1 a broken View partly in vertical longitudinal section andpartly in side elevation of a shot gun constructed in ac- .cordance withmy invention, showing the breech-closure at the limit of its rearwardexcursion and a cartridge entirely fed out upon the pivotalcartridge-carrier. Fig. 2 a corresponding view with the cartridgecarriershown as: swung into its delivering position. Fig; 3 a view of the gunin ver` tical transverse section on the line a-b of Fig. 1 drawnon anenlarged scale andi looking from front to rear. Fig.v 4 a detachedreverse plan view of the breech-closure. Fig. 5- a detached plan view ofthe carrier. Fig. 6 a sectional view on the line c-CZ of Fig. 5, drawnon the scale of Fig. 3, and showing the spring-plunger mounted in thehub. at the end of the upturned rear `arm of the carrier.

My invention relates toan improvement in that class of tubular magazinerepeating shot guns which employ pivotal cartridgecarriers, and compoundmovement breechclosures the rear ends of whichl are raised for lockingand lowered for unlocking, the object being to provide simple andreliable means for lifting the forward end of the carrier into itsfeeding position.

With these ends in view my invention consists in a gun having certaindetails of construction and combinations of parts as will be hereinafterdescribed and pointed out in the claims.

In carrying out my invention as herein shown, the breech-closure 2 isformed in its Linder face with a relatively large and deep chamber 3resulting in the`production of side walls 4 and 5. The inner face of theright hand side wall 5 is formed, as best shown in Fig. 2, with a cut ornotch 6 producing a lifting-cam 7 which at' its rear end merges into astraight sustaining face S. The extreme rear end of the inner face ofthe said wall 4 is beveled to form a clearance-cam 9 located in thevertical plane as distinguished from the lifting-cani 7 which is locatedin the horizontal plane. The said cams 7 and 9 and the sustainingface 8coact with a horizontally arranged spring-plunger 10 mounted in ahorizontally arranged hub 11 projecting inward from an upwardly turnedarm 12 forming the rear end of the pivotal cartridge-carrier 13 andlocated to the rear of the pivot 14 thereof. The `said Ahub 11 is formedwith a chamber l5y for the reception of the plunger 10 which is providedat itsinner end with a retaining shoulder 16 slightly smaller indiameter than the diameter of the chamber 15 which receives a plug 17having a stem 18 encircled by a plunger-spring 19 and entering acounterbore 2O formed in the plunger which is thus guided by the stem 18and constantly pressed outward by the spring 19.

At its forward end the carrier is formed with a spoon-like arm 21 forthe reception of the cartridges 22 which are fed upon it from front torear from the tubular magazine 23 which is furnished as usual with afollower and follower-spring neither of which is shown. Thetubular-magazine 23 supports the sliding action-handle 24 which carriesan action-bar 25 having at its rear end an inwardly projectingoperating-lug 26 which works in a cam-path 27 formed in the outer faceof the left hand side wall 4 of the breech-closure 2 for operating thesame back and forth and up and down as required for locking andunlocking. The breechclosure 2 is formed at its rear end with alocking-lug or nose 28 entering a lockingnotch 29 formed in the solidtop 30 of the gun-frame or receiver 31, the right hand wall of which isprovided with an ejectionopening 32, and the bottom of which has afeeding-opening 32a.

Assuming the breech-closure and carrier to be in the positions shown inFig. 1, just as soon as the breech-closure starts on its forwardexcursion, its cam 7 will engage with the upper face of thespring-plunger 10, whereby the carrier 13 will be swung on its pivot 14so as to depress its arm 12 and elevate its spoon-like arm 21 as shownin `to project the plunger into position in front cartridge-chamber 33in the gun-barrel 34 by the forward end of the breech-closure 2 as thesame moves forward into its closed position. As the breech-closure movesforward the cam 7 discharges its lifting-function as described and issucceeded in operation by the sustaining-face 8 which rides over theplunger l0 and maintains the carrier in its feeding position until afterthe cartridge has been sufficiently entered into the chamber 33 toprovide for the full control of the cartridge thereafter by the forwardmovement of the breech-closure. As soon as -the rear end of thesustaining-face 8 passes over the plunger l0, the carrierspring 35 atonce asserts itself to rock the carrier on its pivot 14 into itscartridge-receiving position as shown in Fig. 2, whereby the upturnedarm 12 of the carrier is lifted into line with the cain 9 of thebreechclosure, so that when the breech-closure moves back into its openposition the cam 9 will engage with the end of the plunger and force thesaine back into its retired position so that the bolt is leftunobstructed to move rearward without disturbing the carrier. As thebolt moves rearward as described, the smooth surface of that portion ofthe inner surface of the wall 4 of the breech-closure lying between thecams 7 and y 9 rides over the end of the plunger along the pathindicated by the broken line 36. As soon as this surface has passed overthe plunger, the spring 19 thereof asserts itself of the cam 7. It willthus be seen that the cams 7 and 8 coact with the spring-plunger l() toproduce what virtually amounts to what is known by mechanics as theisland movement.

I claim '1. In a repeating firearm, the combination with a compoundmovement breech-closure, the rear end of which is raised and lowered forbeing locked and unlocked, and the lower face of which is chambered andwhich is formed with a lifting-cam, a clearance-cam, and asustainingface; of a pivotal cartridge-carrier provided at its rear endwith an arm extending upwardly into the chamber of the breech-closure,and a spring-plunger mounted in the said arm in position to coact withthe said cams and face of the breech-closure.

2. In a repeating firearm, the combination with a compound movementbreech-closure,

the rear end of which is raised and lowered for being locked andunlocked, of a pivotal cartridge-carrier having at its rear end anupwardly extending arm, and a springplunger mounted in the said arm andcoacting with the breech-closure for the operation of the carrier.

3. In a repeating firearm, the combination with a compound movementbreech-closure, the rear end of which is raised and lowered for beinglocked and unlocked, and which is formed in its lower face with achamber one of the side walls of which is formed with a lifting-cam, asustaining face and a clearance cam; of a pivotal cartridge-carrierhaving a spoon-like arm at its forward end, and at its rear end anupwardly extending arm terminating in a chambered hub, and aspringactuated plunger mounted in the said hub in position to coact withthe said cams and sustaining face.

4. In a repeating firearm, the combination withI a compound movementbreech-closure the rear end of which is raised and lowered for beinglocked and unlocked and which is formed in its lower face with a chamberone of the side walls of which is formed`

